Ji Hwan Cha Professor
Department of Statistics
Professor Ji Hwan Cha received his B.S. degree in Computer Science and Statistics from Seoul National University, Korea, in 1993; and his M.S., and Ph.D. degrees in Statistics from Seoul National University in 1995, and 1999, respectively. He is a Full Professor at the Department of Statistics, Ewha Womans University, Seoul, Korea. He is an associate editor of the Methodology and Computing in Applied Probability. He has published about 156 papers (up to Feb. 2024) in various international journals such as Journal of Applied Probability and Advances in Applied Probability. His research interests include applied probability, stochastic models for machine learning, temporal point process-based reinforcement learning, reliability theory, stochastic processes, stochastic operations research, and management science. He has published (co-authored with Dr. Maxim Finkelstein) two books entitled “Stochastic Modeling for Reliability: Shocks, Burn-in and Heterogeneous Populations” (2013, Springer), and “Point Processes for Reliability Analysis” (2018, Springer).
- Science Building B #B520
- 02-3277-6856
- Office hours
- 월, 화 오후 1시-오후 5시
Research Record
- An advanced acceptance reliability sampling plan for heterogeneous items subject to external shocks IMA Journal of Management Mathematics, 2024, v.35 no.2, 197-213
- Discussing some approaches to delta-shock modeling TOP, 2024, v.32 no.2, 245-262
- New continuous bivariate distributions generated from shock models STATISTICS, 2024, v.58 no.2, 437-449
- On the multiattempt minimal repair and the corresponding counting process Applied Stochastic Models in Business and Industry, 2024, v.40 no.1, 206-215
- Poisson generalized Lindley process and its properties Metrika, 2024, v.87 no.1, 61-74
- Preservation of the log concavity by Bernstein operator with an application to ageing properties of a coherent system Journal of Computational and Applied Mathematics, 2024, v.443, 115748
- Preventive maintenance for the constrained multi-attempt minimal repair Reliability Engineering and System Safety, 2024, v.243, 109899
- Acceptance reliability sampling plan for items from heterogeneous populations Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2023, v.237 no.6, 1199-1208
- Improving classical optimal age-replacement policies for degrading items Reliability Engineering and System Safety, 2023, v.236, 109303
- Improving the age composition of dynamic populations of manufactured items Statistics and Probability Letters, 2023, v.201, 109879
- Optimal preventive maintenance strategy for populations of systems that generate outputs Reliability Engineering and System Safety, 2023, v.237, 109334
- Termination versus operation extension for degrading systems Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2023, v.237 no.6, 1175-1185
- A Preventive Replacement Policy for a System Subject to Bivariate Generalized Polya Failure Process Mathematics, 2022, v.10 no.11, 1833
- A new class of marginally regular multivariate counting processes generated by the mixture of multivariate Poisson processes Communications in Statistics - Theory and Methods, 2022, v.51 no.13, 4235-4251
- A new warranty policy for heterogeneous items subject to monotone degradation processes Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2022, v.236 no.1, 55-65
- AN EXTENDED CLASS OF UNIVARIATE AND MULTIVARIATE GENERALIZED POLYA PROCESSES ADVANCES IN APPLIED PROBABILITY, 2022, v.54 no.3, 974-997
- Age-replacement policy for items described by stochastic degradation with dependent increments IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2022, v.33 no.2, 273-287
- Balancing load and performance for different failure models Applied Stochastic Models in Business and Industry, 2022, v.38 no.2, 323-333
- On a hazard (failure) rate process with delays after shocks Statistics and Probability Letters, 2022, v.181, 109276
- Optimal preventive switching of components in degrading systems RELIABILITY ENGINEERING & SYSTEM SAFETY, 2022, v.219, 108266
- Reducing degradation and age of items in imperfect repair modeling Test, 2022
- Replacement Policy for Heterogeneous Items Subject to Gamma Degradation Processes Methodology and Computing in Applied Probability, 2022, v.24 no.3, 1323-1340
- Two Reliability Acceptance Sampling Plans for Items Subject to Wiener Process of Degradation Methodology and Computing in Applied Probability, 2022, v.24 no.3, 1651-1668
- A general multivariate new better than used (MNBU) distribution and its properties METRIKA, 2021, v.84 no.1, 27-46
- On a multivariate IFR and positively dependent lifetime model induced by multiple shot-noise processes Statistical Papers, 2021, v.62 no.2, 561-590
- On dynamic information-based life extension Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2021, v.235 no.4, 690-699
- Optimal inspection for missions with a possibility of abortion or switching to a lighter regime TOP, 2021, v.29 no.3
- Optimal warranty policy with inspection for heterogeneous, stochastically degrading items European Journal of Operational Research, 2021, v.289 no.3, 1142-1152
- Poisson generalized gamma process and its properties Stochastics, 2021, 11 Jan 2021
- Rejoinder to "Virtual age, is it real?" APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2021 , 45-52
- Variables acceptance reliability sampling plan based on degradation test Statistical Papers, 2021, v.62 no.5, 2227-2245
- Variables acceptance reliability sampling plan for items subject to inverse Gaussian degradation process Journal of Applied Statistics, 2021, v.48 no.3, 393-409
- Virtual age, is it real? - Discussing virtual age in reliability context Applied Stochastic Models in Business and Industry, 2021, v.37 no.1, 3-16
- A hybrid preventive maintenance model for systems with partially observable degradation IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2020, v.31 no.3, 345-365
- A new general class of discrete bivariate distributions constructed by using the likelihood ratio Statistical Papers, 2020, v.61 no.3, 923-944
- Is perfect repair always perfect? Test, 2020, v.29 no.1, 90-104
- ON A MULTIVARIATE GENERALIZED POLYA PROCESS without REGULARITY PROPERTY Probability in the Engineering and Informational Sciences, 2020, v.34 no.4, 484-506
- On a new age-replacement policy for items with observed stochastic degradation Quality and Reliability Engineering International, 2020, v.36 no.3, 1132-1143
- On optimal life extension for degrading systems Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2020, v.234 no.3, 487-495
- Stochastic modelling of operational quality of k-out-of-n systems TOP, 2020, v.28 n.2, 0
- A bivariate optimal replacement policy for a system subject to a generalized failure and repair process APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.3, 637-650
- A new class of multivariate counting processes and its characterization Stochastics, 2019, v.91 no.3, 383-406
- Application of the generalized Polya process to two types of shock models AIP Conference Proceedings, 2019, v.2116, 450026
- New failure and minimal repair processes for repairable systems in a random environment APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.3, 522-536
- On some characteristics of quality for systems operating in a random environment PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2019, v.233 no.2, 257-267
- Optimal preventive maintenance for systems having a continuous output and operating in a random environment TOP, 2019, v.27 no.2, 327-350
- Poisson Lindley process and its main properties Statistics and Probability Letters, 2019, v.152, 74-81
- Some results on discrete mixture failure rates Communications in Statistics - Theory and Methods, 2019, v.48 no.15, 3884-3898
- Stochastic modeling for systems with delayed failures Reliability Engineering and System Safety, 2019, v.188, 118-124
- Stochastic modeling of quality of systems operating in a heterogeneous environment APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.6, 1344-1365
- TRANSFORMED LEVY PROCESSES AS STATE-DEPENDENT WEAR MODELS ADVANCES IN APPLIED PROBABILITY, 2019, v.51 no.2, 468-486
- A dynamic bivariate common shock model with cumulative effect and its actuarial application SCANDINAVIAN ACTUARIAL JOURNAL, 2018, v. no.10, 890-906
- Advanced poisson shock models Springer Series in Reliability Engineering, 2018 , 111-168
- Applications of the generalized Polya process Springer Series in Reliability Engineering, 2018 , 279-327
- Applications of the mixed poisson process Springer Series in Reliability Engineering, 2018 , 351-390
- Bivariate preventive maintenance of systems with lifetimes dependent on a random shock process European Journal of Operational Research, 2018, v.266 no.1, 122-134
- Generalizations of renewal process Springer Series in Reliability Engineering, 2018 , 211-246
- Generalized Polya process Springer Series in Reliability Engineering, 2018 , 247-278
- Introduction Springer Series in Reliability Engineering, 2018 , 1-8
- Modelling of Marginally Regular Bivariate Counting Process and its Application to Shock Model METHODOLOGY AND COMPUTING IN APPLIED PROBABILITY, 2018, v.20 no.4, 1137-1154
- Multivariate generalized Polya process Springer Series in Reliability Engineering, 2018 , 329-350
- ON OPTIMAL OPERATIONAL SEQUENCE OF COMPONENTS IN A WARM STANDBY SYSTEM JOURNAL OF APPLIED PROBABILITY, 2018, v.55 no.4, 1014-1024
- On information-based residual lifetime in survival models with delayed failures STATISTICS & PROBABILITY LETTERS, 2018, v.137, 209-216
- On optimal replacement of systems with failure rates described by a random jump process QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, 2018, v.34 no.8, 1590-1604
- On preventive maintenance under different assumptions on the failure/repair processes QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, 2018, v.34 no.1, 66-77
- Optimal mission abort policy for partially repairable heterogeneous systems European Journal of Operational Research, 2018, v.271 no.3, 818-825
- Optimal replacement policy under a general failure and repair model: Minimal versus worse than old repair Reliability Engineering and System Safety, 2018, v.180, 362-372
- Poisson process Springer Series in Reliability Engineering, 2018 , 73-110
- Poisson shock model with applications to preventive maintenance Springer Series in Reliability Engineering, 2018 , 169-209
- Preliminaries: Reliability and point processes Springer Series in Reliability Engineering, 2018 , 9-35
- Renewal processes and applications Springer Series in Reliability Engineering, 2018 , 37-71
- Shocks as the discrete scale Springer Series in Reliability Engineering, 2018 , 391-419
- Stochastic comparisons and multivariate dependence for the epoch times of trend renewal processes JOURNAL OF MULTIVARIATE ANALYSIS, 2018, v.168, 174-184
- UNIVARIATE AND MULTIVARIATE STOCHASTIC COMPARISONS AND AGEING PROPERTIES OF THE GENERALIZED POLYA PROCESS JOURNAL OF APPLIED PROBABILITY, 2018, v.55 no.1, 233-253
- Bivariate preventive maintenance for repairable systems subject to random shocks Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2017, v.231 no.6, 643-653
- Modeling Discrete Bivariate Data with Applications to Failure and Count Data Quality and Reliability Engineering International, 2017, v.33 no.7, 1455-1473
- Multivariate reliability modelling based on dependent dynamic shock models Applied Mathematical Modelling, 2017, v.51, 199-216
- On a New Shot Noise Process and the Induced Survival Model Methodology and Computing in Applied Probability, 2017, v.20 n.3, 1-21
- On bending (down and up) property of reliability measures in mixtures Metrika, 2017, v.80 no.4, 455-482
- On optimal grouping and stochastic comparisons for heterogeneous items JOURNAL OF MULTIVARIATE ANALYSIS, 2017, v.160, 146-156
- On preventive maintenance of systems with lifetimes dependent on a random shock process Reliability Engineering and System Safety, 2017, v.168, 90-97
- Prediction of the residual failure processes based on the process history Communications in Statistics - Theory and Methods, 2017, v.46 no.13, 6336-6357
- Reliability sampling plan for repairable items following general failure process and its statistical analysis Statistics, 2017, v.51 n.5, 1-20
- Stochastic ordering for populations of manufactured items Test, 2017, v.27 n.1, 1-24
- A new generalized burn-in procedure for items in stochastically evolving population Applied Mathematical Modelling, 2016, v.40 no.19-20
- An information-based burn-in procedure for minimally repaired items from mixed population APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2016, v.32 no.4, 511-525
- Dynamic mixing probability measures of mixtures Communications in Statistics - Theory and Methods, 2016, v.45 no.16, 4824-4839
- Justifying the Gompertz curve of mortality via the generalized Polya process of shocks Theoretical Population Biology, 2016, v.109, 54-62
- Maintenance Policy for a System With Stochastically Dependent Failure Modes With Shock-Accumulation Effect IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.3, 1284-1297
- New stochastic models for preventive maintenance and maintenance optimization EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2016, v.255 no.1, 80-90
- On Ageing Concepts for Repairable Items From Heterogeneous Populations IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.4, 1864-1870
- On a class of multivariate counting processes Advances in Applied Probability, 2016, v.48 no.2, 443-462
- On information-based warranty policy for repairable products from heterogeneous population European Journal of Operational Research, 2016, 18 FEB 2016
- On some properties of shock processes in a 'natural' scale Reliability Engineering and System Safety, 2016, v.145, 104-110
- On stochastic comparisons for population age and remaining lifetime Statistical Papers, 2016, 1 MAR 2016, 1-15
- Optimal Long-Run Imperfect Maintenance With Asymptotic Virtual Age IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.1, 187-196
- Optimal Replacement of Heterogeneous Items With Minimal Repairs IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.2, 593-603
- Point process approach to modeling and analysis of general cascading failure models Journal of Applied Probability, 2016, v.53 no.1, 174-186
- 다중 동적 Competing Risks 모형을 갖는이변량 신뢰성 모형에 관한 연구 한국데이터정보과학회지, 2016, v.27 no.3, 711~724
- A dependent competing risks model for technological units subject to degradation phenomena and catastrophic failures Quality and Reliability Engineering International, 2015, v.32 n.2
- A dynamic stress-strength model with stochastically decreasing strength METRIKA, 2015, v.78 no.7, 807-827
- A stochastic failure model with dependent competing risks and its applications to condition-based maintenance Journal of Applied Probability, 2015, v.52 no.2, 558-573
- Analysis of reliability characteristics in the acceptance sampling tests Journal of Applied Statistics, 2015, 30 DEC 2015, 1-18
- BURN-IN PROCEDURE BASED ON A DEPENDENT COVARIATE PROCESS ADVANCES IN APPLIED PROBABILITY, 2015, v.47 no.2, 506-529
- Construction of two new general classes of bivariate distributions based on stochastic orders Journal of Multivariate Analysis, 2015, v.142, 75-85
- Environmental stress screening modelling, analysis and optimization RELIABILITY ENGINEERING & SYSTEM SAFETY, 2015, v.139, 149-155
- New shock models based on the generalized Polya process European Journal of Operational Research, 2015, 4 DEC 2015
- On Two General Classes of Discrete Bivariate Distributions American Statistician, 2015, v.69 no.3, 221-230
- On some mortality rate processes and mortality deceleration with age Journal of Mathematical Biology, 2015, v.72 n.1-2
- Optimal burn-in procedure for mixed populations based on the device degradation process history European Journal of Operational Research, 2015, 18 DEC 2015
- Variables acceptance reliability sampling plan for repairable items Statistics, 2015, v.49 no.5, 1141-1156
- A competing risks model with degradation phenomena and catastrophic failures International Journal of Performability Engineering, 2014, v.10 no.1, 63-74
- Burn-in for Eliminating Weak Items in Heterogeneous Populations COMMUNICATIONS IN STATISTICS-THEORY AND METHODS, 2014, v.43 no.24, 5115-5129
- CHARACTERIZATION OF THE GENERALIZED POLYA PROCESS AND ITS APPLICATIONS ADVANCES IN APPLIED PROBABILITY, 2014, v.46 no.4, 1148-1171
- On construction of general classes of bivariate distributions JOURNAL OF MULTIVARIATE ANALYSIS, 2014, v.127, 151-159
- On some conditional characteristics of hazard rate processes induced by external shocks Operations Research Letters, 2014, v.42 no.5, 325-331
- Preservation of ageing classes in deterioration models with independent increments JOURNAL OF INEQUALITIES AND APPLICATIONS, 2014
- Some notes on unobserved parameters (frailties) in reliability modeling RELIABILITY ENGINEERING & SYSTEM SAFETY, 2014, v.123, 99-103
- Stochastic comparison of multivariate conditionally dependent mixtures JOURNAL OF MULTIVARIATE ANALYSIS, 2014, v.129 no., 82-94
- Stochastic modeling for environmental stress screening Journal of Applied Probability, 2014, v.51 no.2, 387-399
- Survival of systems with protection subject to two types of external attacks ANNALS OF OPERATIONS RESEARCH, 2014, v.212 no.1, 79-91
- [학술지논문] An advanced acceptance reliability sampling plan for heterogeneous items subject to external shocks IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2024, v.35 no.2 , 197-213
- [학술지논문] New continuous bivariate distributions generated from shock models STATISTICS, 2024, v.58 no.2 , 437-449
- [학술지논문] On the combined imperfect repair process PROBABILITY IN THE ENGINEERING AND INFORMATIONAL SCIENCES, 2024, v.38 no.2 , 341-354
- [학술지논문] On the multiattempt minimal repair and the corresponding counting process APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2024, v.40 no.1 , 206-215
- [학술지논문] Poisson generalized Lindley process and its properties METRIKA, 2024, v.87 no.1 , 61-74
- [학술지논문] Preventive maintenance for the constrained multi-attempt minimal repair RELIABILITY ENGINEERING & SYSTEM SAFETY, 2024, v.243 no.1 , 109899-109899
- [학술지논문] Acceptance reliability sampling plan for items from heterogeneous populations PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2023, v.237 no.6 , 1199-1208
- [학술지논문] Discussion of "An overview of some classical models and discussion of the signature-based models of preventive maintenance" APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2023, v.39 no.1 , 82-84
- [학술지논문] Improving classical optimal age-replacement policies for degrading items RELIABILITY ENGINEERING & SYSTEM SAFETY, 2023, v.236 no.1 , 109303-109303
- [학술지논문] Improving the age composition of dynamic populations of manufactured items STATISTICS & PROBABILITY LETTERS, 2023, v.201 no.1 , 109879-109879
- [학술지논문] On the delayed worse-than-minimal repair model and its application to preventive replacement IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2023, v.34 no.1 , 101-122
- [학술지논문] Optimal preventive maintenance strategy for populations of systems that generate outputs RELIABILITY ENGINEERING & SYSTEM SAFETY, 2023, v.237 no.1 , 109334-109334
- [학술지논문] Termination versus operation extension for degrading systems PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2023, v.237 no.6 , 1175-1185
- [학술지논문] A new class of marginally regular multivariate counting processes generated by the mixture of multivariate Poisson processes COMMUNICATIONS IN STATISTICS-THEORY AND METHODS, 2022, v.51 no.13 , 4235-4251
- [학술지논문] A new warranty policy for heterogeneous items subject to monotone degradation processes PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2022, v.236 no.1 , 55-65
- [학술지논문] AN EXTENDED CLASS OF UNIVARIATE AND MULTIVARIATE GENERALIZED POLYA PROCESSES ADVANCES IN APPLIED PROBABILITY, 2022, v.54 no.3 , 974-997
- [학술지논문] Acceptance reliability sampling plan for discrete lifetime models STATISTICS, 2022, v.55 no.6 , 1291-1309
- [학술지논문] Acceptance reliability sampling plan for items with two failure modes STATISTICS, 2022, v.56 no.6 , 1345-1363
- [학술지논문] Age-replacement policy for items described by stochastic degradation with dependent increments IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2022, v.33 no.2 , 273-287
- [학술지논문] Balancing load and performance for different failure models APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2022, v.38 no.2 , 323-333
- [학술지논문] ON DEGRADATION-BASED REMAINING LIFETIME PROBABILITY IN THE ENGINEERING AND INFORMATIONAL SCIENCES, 2022, v.36 no.3 , 812-823
- [학술지논문] On a hazard (failure) rate process with delays after shocks STATISTICS & PROBABILITY LETTERS, 2022, v.181 no.1 , 109276-109276
- [학술지논문] On some general survival models with delayed failures COMMUNICATIONS IN STATISTICS-THEORY AND METHODS, 2022, v.51 no.22 , 7911-7928
- [학술지논문] Optimal preventive switching of components in degrading systems RELIABILITY ENGINEERING & SYSTEM SAFETY, 2022, v.219 no.1 , 108266-108266
- [학술지논문] Reducing degradation and age of items in imperfect repair modeling TEST, 2022, v.31 no.4 , 1058-1081
- [학술지논문] Replacement Policy for Heterogeneous Items Subject to Gamma Degradation Processes METHODOLOGY AND COMPUTING IN APPLIED PROBABILITY, 2022, v.24 no.3 , 1323-1340
- [학술지논문] Two Reliability Acceptance Sampling Plans for Items Subject to Wiener Process of Degradation METHODOLOGY AND COMPUTING IN APPLIED PROBABILITY, 2022, v.24 no.3 , 1651-1668
- [학술지논문] A general multivariate new better than used (MNBU) distribution and its properties METRIKA, 2021, v.84 no.1 , 27-46
- [학술지논문] Acceptance reliability sampling plan for discrete lifetime models STATISTICS, 2021, v.55 no.6 , 1291-1309
- [학술지논문] On a multivariate IFR and positively dependent lifetime model induced by multiple shot-noise processes STATISTICAL PAPERS, 2021, v.62 no.2 , 561-590
- [학술지논문] On degradation-based imperfect repair and induced generalized renewal processes TEST, 2021, v.30 no.4 , 1026-1045
- [학술지논문] On dynamic information-based life extension PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2021, v.235 no.4 , 690-699
- [학술지논문] Optimal inspection for missions with a possibility of abortion or switching to a lighter regime TOP, 2021, v.29 no.3 , 722-740
- [학술지논문] Optimal warranty policy with inspection for heterogeneous, stochastically degrading items EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2021, v.289 no.3 , 1142-1152
- [학술지논문] Poisson generalized gamma process and its properties STOCHASTICS-AN INTERNATIONAL JOURNAL OF PROBABILITY AND STOCHASTIC PROCESSES, 2021, v.93 no.8 , 1123-1140
- [학술지논문] Rejoinder to "Virtual age, is it real?" APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2021, v.37 no.1 , 45-52
- [학술지논문] Variables acceptance reliability sampling plan based on degradation test STATISTICAL PAPERS, 2021, v.62 no.5 , 2227-2245
- [학술지논문] Variables acceptance reliability sampling plan for items subject to inverse Gaussian degradation process JOURNAL OF APPLIED STATISTICS, 2021, v.48 no.3 , 393-409
- [학술지논문] Virtual age, is it real? - Discussing virtual age in reliability context APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2021, v.37 no.1 , 3-16
- [학술지논문] A hybrid preventive maintenance model for systems with partially observable degradation IMA JOURNAL OF MANAGEMENT MATHEMATICS, 2020, v.31 no.3 , 345-365
- [학술지논문] A new general class of discrete bivariate distributions constructed by using the likelihood ratio STATISTICAL PAPERS, 2020, v.61 no.3 , 923-944
- [학술지논문] Is perfect repair always perfect? TEST, 2020, v.29 no.1 , 90-104
- [학술지논문] ON A MULTIVARIATE GENERALIZED POLYA PROCESS WITHOUT REGULARITY PROPERTY PROBABILITY IN THE ENGINEERING AND INFORMATIONAL SCIENCES, 2020, v.34 no.4 , 484-506
- [학술지논문] On a new age-replacement policy for items with observed stochastic degradation QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, 2020, v.36 no.3 , 1132-1143
- [학술지논문] On optimal life extension for degrading systems PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, 2020, v.234 no.3 , 487-495
- [학술지논문] Stochastic modelling of operational quality ofk-out-of-nsystems TOP, 2020, v.28 no.2 , 424-441
- [학술지논문] A bivariate optimal replacement policy for a system subject to a generalized failure and repair process APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.3 , 637-650
- [학술지논문] New failure and minimal repair processes for repairable systems in a random environment APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.3 , 522-536
- [학술지논문] Optimal preventive maintenance for systems having a continuous output and operating in a random environment TOP, 2019, v.27 no.2 , 327-350
- [학술지논문] Poisson Lindley process and its main properties STATISTICS & PROBABILITY LETTERS, 2019, v.152 no.1 , 74-81
- [학술지논문] Some results on discrete mixture failure rates COMMUNICATIONS IN STATISTICS-THEORY AND METHODS, 2019, v.48 no.15 , 3884-3898
- [학술지논문] Stochastic modeling for systems with delayed failures RELIABILITY ENGINEERING & SYSTEM SAFETY, 2019, v.188 no.1 , 118-124
- [학술지논문] Stochastic modeling of quality of systems operating in a heterogeneous environment APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2019, v.35 no.6 , 1344-1365
- [학술지논문] TRANSFORMED LEVY PROCESSES AS STATE-DEPENDENT WEAR MODELS ADVANCES IN APPLIED PROBABILITY, 2019, v.51 no.2 , 468-486
- [학술지논문] A dynamic bivariate common shock model with cumulative effect and its actuarial application SCANDINAVIAN ACTUARIAL JOURNAL, 2018, v.2018 no.10 , 890-906
- [학술지논문] Modelling of Marginally Regular Bivariate Counting Process and its Application to Shock Model METHODOLOGY AND COMPUTING IN APPLIED PROBABILITY, 2018, v.20 no.4 , 1137-1154
- [학술지논문] ON OPTIMAL OPERATIONAL SEQUENCE OF COMPONENTS IN A WARM STANDBY SYSTEM JOURNAL OF APPLIED PROBABILITY, 2018, v.55 no.4 , 1014-1024
- [학술지논문] On a New Shot Noise Process and the Induced Survival Model METHODOLOGY AND COMPUTING IN APPLIED PROBABILITY, 2018, v.20 no.3 , 897-917
- [학술지논문] On information-based residual lifetime in survival models with delayed failures STATISTICS & PROBABILITY LETTERS, 2018, v.137 no.1 , 209-216
- [학술지논문] On optimal replacement of systems with failure rates described by a random jump process QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, 2018, v.34 no.8 , 1590-1604
- [학술지논문] Optimal mission abort policy for partially repairable heterogeneous systems EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2018, v.271 no.3 , 818-825
- [학술지논문] Optimal replacement policy under a general failure and repair model: Minimal versus worse than old repair RELIABILITY ENGINEERING & SYSTEM SAFETY, 2018, v.180 no.1 , 362-372
- [학술지논문] Stochastic comparisons and multivariate dependence for the epoch times of trend renewal processes JOURNAL OF MULTIVARIATE ANALYSIS, 2018, v.168 no.1 , 174-184
- [학술지논문] A Dependent Competing Risks Model for Technological Units Subject to Degradation Phenomena and Catastrophic Failures QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, 2016, v.32 no.2 , 505-517
- [학술지논문] A new generalized burn-in procedure for items in stochastically evolving population APPLIED MATHEMATICAL MODELLING, 2016, v.40 no.19-20 , 8338-8351
- [학술지논문] An information-based burn-in procedure for minimally repaired items from mixed population APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2016, v.32 no.4 , 511-525
- [학술지논문] Analysis of reliability characteristics in the acceptance sampling tests JOURNAL OF APPLIED STATISTICS, 2016, v.43 no.10 , 1874-1891
- [학술지논문] Dynamic mixing probability measures of mixtures COMMUNICATIONS IN STATISTICS-THEORY AND METHODS, 2016, v.45 no.16 , 4824-4839
- [학술지논문] Justifying the Gompertz curve of mortality via the generalized Polya process of shocks THEORETICAL POPULATION BIOLOGY, 2016, v.109 no.1 , 54-62
- [학술지논문] Maintenance Policy for a System With Stochastically Dependent Failure Modes With Shock-Accumulation Effect IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.3 , 1284-1297
- [학술지논문] New stochastic models for preventive maintenance and maintenance optimization EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2016, v.255 no.1 , 80-90
- [학술지논문] On Ageing Concepts for Repairable Items From Heterogeneous Populations IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.4 , 1864-1870
- [학술지논문] On information-based warranty policy for repairable products from heterogeneous population EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2016, v.253 no.1 , 204-215
- [학술지논문] Optimal Long-Run Imperfect Maintenance With Asymptotic Virtual Age IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.1 , 187-196
- [학술지논문] Optimal Replacement of Heterogeneous Items With Minimal Repairs IEEE TRANSACTIONS ON RELIABILITY, 2016, v.65 no.2 , 593-603
- [학술지논문] POINT PROCESS APPROACH TO MODELING AND ANALYSIS OF GENERAL CASCADING FAILURE MODELS JOURNAL OF APPLIED PROBABILITY, 2016, v.53 no.1 , 174-186
Courses
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2024-2nd
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Sampling Survey Methods
- Subject No 30219Class No 01
- 3Year ( 3Credit , 3Hour) Mon 6~6 (POSCO452) , Wed 5~5 (POSCO452)
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Selected Topics in Stochastic Processes Ⅰ
- Subject No G11895Class No 01
- Year ( 3Credit , 3Hour) Mon 7~8 (POSCO-452)
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2024-1st
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Insurance Statistics
- Subject No 35977Class No 01
- 4Year ( 3Credit , 3Hour) Mon 6~6 (POSCO453) , Wed 5~5 (POSCO453)
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Stochastic Process
- Subject No G11813Class No 01
- Year ( 3Credit , 3Hour) Mon 7~8 (POSCO-453)
- Classroom Changed
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2023-2nd
-
Sampling Survey Methods
- Subject No 30219Class No 01
- 3Year ( 3Credit , 3Hour) Mon 6~6 (POSCO452) , Wed 5~5 (POSCO452)
-
Selected Topics in Stochastic Processes Ⅰ
- Subject No G11895Class No 01
- Year ( 3Credit , 3Hour) Mon 7~8 (POSCO-452)
- Classroom Changed
-
-
2023-1st
-
Insurance Statistics 강의 계획서 상세보기
- Subject No 35977Class No 01
- 4Year ( 3Credit , 3Hour) Mon 6~6 (POSCO453) , Wed 5~5 (POSCO453)
-
Selected Topics in Stochastic Processes Ⅱ
- Subject No G11822Class No 01
- Year ( 3Credit , 3Hour) Mon 7~8 (POSCO-453)
-
-
2022-2nd
-
Sampling Survey Methods
- Subject No 30219Class No 01
- 3Year ( 3Credit , 3Hour) Mon 6~6 (POSCO453) , Wed 5~5 (POSCO453)
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Non-life Insurance Mathematics
- Subject No G16358Class No 01
- Year ( 3Credit , 3Hour) Mon 7~7 (D108) , Wed 7~7 (D108)
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2021-1st
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Insurance Statistics
- Subject No 35977Class No 01
- 4Year ( 3Credit , 3Hour) Mon 4~4 , Thu 5~5
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Insurance Statistics
- Subject No 35977Class No 02
- 4Year ( 3Credit , 3Hour) Mon 9~9 , Thu 9~9
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Life Insurance Mathematics
- Subject No G16357Class No 01
- Year ( 3Credit , 3Hour) Mon 6~7 (D106)
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Academic Background
Seoul Nat'l Univ. 이학박사(통계학과)
Seoul Nat'l Univ. 이학석사(계산통게학과)
Seoul Nat'l Univ. 이학사(계산통계학과)